Machibte for cutting seaves jfjrpm the bolt



; I. W. RBES.

STAVE GU MACHINE. No. 22,231.

Paten ted Dec. 7, 1858.

,ISAAG FORBES, :OF JEFFERSON, \V'ISOON SIN.

.MAGHINE FOR CUTTING STAY-ES FROM THE BOLT.

specification of Letters Patent .No. 22,231, dated December 7, 18518.

. To all whom it may concern:

Be it known that I, ISAAC V. FORBES, .of Jefferson, in the county ofJefferson and State of lVisc-onsin, have invented a new and Improved.StavesCutti-ng ,Machine; and I do hereby declare that the following is.a full and exact description thereof, reference being had to .theaccompanying drawings making a part of atl'llSElDBGlfiCfifLlOfl, Figure1 being .a front elevation of said ma chine; Fig. 2, a View of one sideof the same; Fig. .3, a vertical section in the line it w of Fig. 1;;Fig. 4L, a. rear view of a detached portion of the head of the machine,and Figs. 5 and 16 are representations of other detached portions of themachine.

Similar letters indicate like parts in each drawing.

The vertical sides A, A, of the frame of my improved stave-cuttingmachine are connected to each other by means of the base cross-pieces q,q, the platform B, and the head cross-bar 2';or the said parallel sidesof the frame of my improved stave-cutting machine may be connected toeach other by any other suitable means.

The extremities of the head cross-bar 2', are secured in apertures inthe inwardly projecting ears 7', j, which are secured to the innersurfaces of the sides A, A, of the frame of the machine, and the saidbar must be of sufficient stiffness and strength to afford the requisitesupport to the hinged platform (Z, which receives the bolt of wood thatis to be cut into staves by the reciproeating cutting blade I). Thepivots which secure the stationary edge of the aforesaid platform (Z, inits proper position, pass outwardly through a pair of upwardlyprojecting strong ears 6, e, which are secured to said platform; and thesame pivotsafter passing through the sides A, A, of the frame of themachinealso pass through the axes of the heads 0, 0, of the knife-heada, c, c, m. The heads (I, c, the segment a, and the ribbed segment m,which form the oscillating knife-head, or cutter-head, of the machine,may be combined with each other in any suitable manner.

The knife I), is secured to the lower edge of the segment a, by means ofcountersunk screws, or other suitable means, which will enable the knifeto pass smoothly through a bolt of wood. Sufiicient space is left he- 1tween the outer surface of the knife and the inner surface of the ribbedsegment m, for

the-passage of a stave between the two, and by varying the width of saidspace the thickness of the stave, out by the knife, can be adjusted toany desired: degree.

The necessary oscillatory motion is imparted :to the :lmife-head bymeans of the two pitmen g, g, which connect :the said .knifeehead .withthe crank-wheels Z, Z, on the extremities of the driving shaft .71.

The operator stands upon the platform 13, which may form a port-ion ofthe floor of the apartment in which the machine is operated. Beforeplacing the bolt of Wood which is to :be converted into staves, upon"the platform (Z, the operator connects the vibrating edge .of saidplatform with the ribbed segment m, by throwing .the latch bolt 7, :(onthe underside of the platfonm) forward into the aperture 8, in saidsegment, which keeps the edge of the knife in contact with the platform(Z, and prevents all danger of accidents while the operator is placing ablock of wood in its proper position upon said plat-form. The aforesaidlatch-bolt f, is connected to the lever 12, which is pivoted to theunder surface of the platform (i, and the said latch-bolt is operated inthe following manner, viz :-The vertical shaft h, which passes throughapertures in the cross-bar 2', and the platform B, is forked at itsupper end, and the legs of the said fork are in such a position that byturning the shaft 71,, in one direction one of its legs will strike thelever n, on the left hand side of its pivot and throw the latch boltforward, and by turning the said shaft in an opposite direction, theother leg of its forked end will strike the lever a, on the right handside of its pivot and draw the latch-bolt outward entirely free andclear from the segment m, of the cutter-head. The shaft 72, may beturned by the operator by taking hold of suitable projecting armstherefrom; or the said shaft may be operated in the following manner,viz :Let a cross-head a, be jointed to the lower extremity of the shafth, and a couple of jointed arms t, t, project upward from theextremities of the said cross-head through apertures in the platform B,as shown in Fig. l,'then leta couple of arms o, 1:, project from thedriving shaft k, in proper positions, so that by the operators placinghis foot upon the upper extremity of either of the arms 25, t, andpressing it downward to a level with the platform B, he

will bring the end of the cross-bar u, thus depressed, within reach ofone of the arms I), on the driving shaft, and thereby enable it toimpart a degree of motion to the shaft 72 which will cause it to sooperate the latch bolt f, as to either connect or disconnect theoscillating edge of the platform (Z, with the ribbed segment m, of

the knife-head, as circumstances may 'require. After each movement ofthe cutting knife, the operator must press forward the belt of wooduntil he brings its forward edge in contact with the inner side of theribbed segment m.

To insure the free and clear discharge of reach stave from the machine acouple of possibility of wasting the Wood or of doing injury to theoperator or to the machine. Spur knives 1', 1", may also be combinedwith the upper edge of the ribbed segment m, for the purpose of trimmingofl the ends of the staves to bring them all to the same length.

Crossing cutters may also be combined with the upper edge of the segmentm, of the knife-head for the purpose of performing their properfunctions.

Having thus fully described my improved stave-cutting machine, what Iclaim therein as new and desire to secure by Letters Patcut, is-

The arrangement of the hinged platform (Z, and its latch-bolt f, in sucha manner with relation to the concaves a and m, and the knife I), of thecutter-head that the said parts can be operated substantially in themanner and for the purpose herein set forth.

The above specification of my improvement in machinery for cuttingstaves, signed and witnessed the tenth day of September ISAAC IV.FORBES. Witnesses:

I. W. BIRD, WINsLoW BLAKE.

